intraatrial block

in·tra·a·tri·al block

impaired conduction through the atria, manifested by widened and often notched P waves in the electrocardiogram.
Synonym(s): interatrial block

in·tra·a·tri·al block

(in'tră-ā'trē-ăl blok)
Impaired conduction through the atria, manifested by widened and often notched P waves in the electrocardiogram.
Synonym(s): interatrial block.
References in periodicals archive ?
All of these are features of left atrial enlargement or intraatrial block. (1)